islamic_civil

Description

islamic_civil converts a provided  Islamic (Hijri) date into a Civil date. It works for both the Gregorian calendar and the Julian calendar (see also civil_jdn)

Gory details

The function presented here is just one example of an algorithm to convert an Islamic date to a Civil date. It starts by calling islamic_jdn to calculate the Julian day number for the provided Islamic date. From this Julian day number, the Christian year, month and day are derived by calling jdn_civil.

Note that the Islamic year is approximately 11 days shorter than the Civil year. This means that the Islamic calendar ``runs faster´´ and will eventually overtake the Civil Calendar. From the first day of the fifth month of the year 20874 (20874-05-01) until the thirtieth day of that month (20874-05-30) the Civil and Islamic dates are exactly the same!

Code section

Sub islamic_civil(ByRef iYear As Integer, _
                       ByRef iMonth As Integer, _
                       ByRef iDay As Integer)
    Call jdn_civil(islamic_jdn(iYear, _
                               iMonth, _
                               iDay), _
                   iYear, iMonth, iDay)
End Sub

See also

islamic_jdn, jdn_civil, civil_islamic

Last update